Using the equation (n+1)(n+2), use mathematical induction to prove that this is divisible by 2.

When you put "1" in for "n", what did you get? When you put "k" in for "n", what (assumption) expression did you get? When you put "k+1" in for "n", what expression did you get? How did you use the "k" expression in the "k+1" expression? Please show all your steps, so we can tell where you're needing hlep. Thanks!